Installation Guide

Table Of Contents
Task 5: Configuring security PMP 450i and PTP 450i Configuration and User
Guide
Task 5: Configuring security
Perform this task to configure the PMP 450i system in accordance with the network
operator’s security policy. Choose from the following procedures:
Isolating APs from the internet on page 79: to ensure that APs are properly secured
from external networks
Encrypting radio transmissions on page 80: to configure the unit to operate with AES or
DES wireless link security
Managing module access by passwords on page 80: to set up the AP to require SMs to
authenticate via the AP, WM, or RADIUS server (see Task 15: Configuring a RADIUS
server on page 184)
Filtering protocols and ports on page 85: to filter (block) specified protocols and ports
from leaving the system
Requiring SM Authentication on page 84: to configure the network to only allow
registration to authenticated SMs
Encrypting downlink broadcasts on page 87: to encrypt downlink broadcast
transmissions such as ARP and NetBIOS
Isolating SMs on page 88: to prevent SMs in the same sector from directly
communicating with each other
Filtering management through Ethernet on page 88: to prevent management access to
the SM via the radio’s Ethernet port
Allowing management only from specified IP addresses on page 88: to only allow radio
management interface access from specified IP addresses
Configuring management IP by DHCP on page 89: to allow the radio’s management IP
address to be assigned by a network DHCP server
Restricting radio Telnet access over the RF interface on page 89: to restrict Telnet
access to the AP
Isolating APs from the internet
Ensure that the IP addresses of the APs in your network
are not routable over the Internet.
do not share the subnet of the IP address of your user.
RFC 1918, Address Allocation for Private Subnets, reserves for private IP
networks three blocks of IP addresses that are not routable over the Internet:
/8 subnets have one reserved network, 10.0.0.0 to 10.255.255.255.
/16 subnets have 16 reserved networks, 172.16.0.0 to 172.31.255.255.
/24 subnets have 256 reserved networks, 192.168.0.0 to 192.168.255.255.
pmp-0957 (April 2015) 79